Mixed potential gas sensor with short response time

Mixed potential gas sensor with short response time

Miniaturized solid electrolyte sensors with mixed potential electrodes are prepared by screen-printing technique with different non-equilibrium electrodes made of Au/MeO-composites and tested with gases containing CO, H 2 and C 3H 6, respectively. Although sensitivities of different electrode materi...

Full description

Saved in:
Bibliographic Details
Published in:Sensors and actuators. B, Chemical Vol. 130; no. 1; pp. 326 - 329
Main Authors: Zosel, J., Tuchtenhagen, D., Ahlborn, K., Guth, U.
Format: Journal Article
Language:English
Published: Elsevier B.V 14-03-2008
Subjects:
Carbon monoxide
Electrodes
Flammability
Gas sensor
Mixed potential
Nanocomposites
Nanostructure
Response time
Sensors
Solid electrolyte
Solid electrolytes
Gas sensor
Response time
Mixed potential
Solid electrolyte
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Miniaturized solid electrolyte sensors with mixed potential electrodes are prepared by screen-printing technique with different non-equilibrium electrodes made of Au/MeO-composites and tested with gases containing CO, H 2 and C 3H 6, respectively. Although sensitivities of different electrode materials do not vary more than 20% in CO containing gas, their response times can differ by nearly one order of magnitude. The response times of one sensor to upward concentration changes of the investigated combustibles increase in the same order and at a similar ratio as the sensitivities to these combustibles. Investigations show that the electrode morphology and layout have a deep impact on the response time of these sensors. Nevertheless, these parameters can be optimized in a way that enables the construction of sensors with response times t 10–90 < 100 ms by using nano-powders for the MeO additive. This range of response times is comparable to that of potentiometric solid electrolyte oxygen sensors and could be ensured in small series production as well as during long-term measurement of 4500 h.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2007.08.008